S-91263A235 3/4"-10 x 1 1/2" ASME B18.3 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated alloy steel construction, extending service life in demanding environments
- Exceptional load-bearing capacity from 120,000 psi tensile strength, preventing fastener failure under high stress
- Precise thread engagement with Class 3A fit, ensuring reliable connections and vibration resistance
- Easy installation and removal using standard 1/2" hex drive tools, reducing assembly time and labor costs
- Optimal flush mounting with 82° countersink angle and flat head design, creating smooth surface finishes
- Enhanced durability from Rockwell C32 hardness, maintaining thread integrity through repeated use
- Broad compatibility with UNC coarse threading, suitable for various industrial materials and applications
Professional Applications & Engineering Value
These 3/4"-10 UNC flat head screws deliver critical performance where high-strength fastening meets precision engineering requirements. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, structural assemblies, and outdoor equipment exposed to harsh conditions. The fully threaded design ensures maximum grip length and load distribution, while the Class 3A thread fit maintains tight tolerances in vibrating environments. The 82° countersink angle allows for seamless flush mounting in metal fabrication, automotive frames, and heavy-duty construction projects where surface integrity matters. These industrial screws solve common challenges of fastener loosening, material fatigue, and installation inefficiency through their optimized hex drive and coarse thread configuration.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit for superior dimensional accuracy. The UNC coarse threading follows standardized spacing for consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. All specifications including the 82° countersink angle, 1-1/2" length, and 1/2" hex drive conform to industrial manufacturing requirements for reliable integration into professional applications.
